Galaxy Note 20 Ultra - No Sim Installed

[Mathew]

Had this phone well over a year now.  Suddenly I'm getting this message every time I open the phone. 

It's annoying. I believe it's due to one of these recent updates. I'm fed up and thinking of going iPhone.

Is Samsung working on this?

[xSteveuk]

Hi,
Try powering off phone
Remove sim card

Power on phone Without sim card

Power off phone
Insert sim card

Power on phone

[Curr946]

You lost my respect as soon as you mentioned iphone 🤣

[Gandolf70]

Hi when ì try to phone out I keep getting NOT REGISTERED TO NETWORK HOW DO I DO THAT

[shieldy]

Had the same problem for last 3 weeks taken to samsung 3 times, now its being condemned and I'm looking forward to either a like for like replacement or full refund. As the phone is now totally fubar.

[Mathew]

OK look, I'm an old guy who admits to getting short tempered and impatient a lot.  I had taken out and reseated the sim card.  Now the thing is working just fine.